CN204214139U - A kind of condensed type combustion gas flue gas waste heat recovery apparatus - Google Patents
A kind of condensed type combustion gas flue gas waste heat recovery apparatus Download PDFInfo
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- CN204214139U CN204214139U CN201420611047.7U CN201420611047U CN204214139U CN 204214139 U CN204214139 U CN 204214139U CN 201420611047 U CN201420611047 U CN 201420611047U CN 204214139 U CN204214139 U CN 204214139U
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- flue gas
- recovery apparatus
- waste heat
- type combustion
- heat recovery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model relates to a kind of novel condensed type combustion gas flue gas waste heat recovery apparatus, is the energy-saving and environmental protection product relevant to gas fired-boiler.Condensed type combustion gas flue gas waste heat recovery apparatus adopts A, B, C tri-grades of integral structures, segmentation condensing heat-exchange, A level is used for heating boiler moisturizing, B level is used for heating boiler air blast, C level adopts cryogenic heat transfer element, with outdoor cold air forced-convection heat transfer, exhaust gas temperature is down to 32 DEG C, most of steam in flue gas becomes condensed water, the CO simultaneously in flue gas
2, NOx, SO
2, the harmful substance such as flue dust is dissolved in condensed water; condensed water is discharged in time by drainage system; greatly reduce the discharge of pollutant; solve the problem that current boiler emits white cigarette; serve significantly energy-conservation, consumption reduction, reduce discharging and protection air effect, effectively reduce urban heat land effect.
Description
Technical field
The utility model relates to a kind of condensed type combustion gas flue gas waste heat recovery apparatus, is the energy-saving and environmental protection product relevant to boiler, is applicable to the exhaust gas temperature reducing gas fired-boiler, Mist heat recovering, improves boiler efficiency, reduce CO in flue gas
2, NOx, SO
2, the harmful substance such as flue dust to the discharge of air, eliminate the combustion gas flue gas waste heat recovery apparatus that boiler emits white cigarette.
Background technology
The exhaust gas temperature of gas fired-boiler is generally at 120 ~ 250 DEG C, and these flue gases contain the sensible heat of 8% ~ 15% and the steam latent heat of 11%, if can not be recycled, boiler efficiency will be caused low, cause the very large wasting of resources, and contain CO simultaneously in flue gas
2, NOx, SO
2, the harmful substance such as flue dust, enter air and can bring baneful influence to environment.
Before the utility model is made, solve this kind of problem mainly by heat pump techniques, but use heat pump to need expensive equipment investment, need to consume a large amount of electric energy, and treatment quantity is limited, is difficult to popularization and application.Combustion gas flue gas waste heat recovery apparatus is a kind of equipment of reduction exhaust gas temperature of maturation, the low-temperature flue gas heat transfer effect that existing combustion gas flue gas waste heat recovery apparatus is lower to hot quality is not fine, and be subject to the restriction of dewpoint corrosion, exhaust gas temperature can only be dropped on flue gas dew point temperature (about 57 DEG C), still there is a large amount of thermal loss, can not effectively solve pollutant emission problem.
In order to address these problems, the cryogenic heat transfer element of the applicable low-temperature flue gas that the utility model adopts aluminium alloy or stainless steel material to make, sensible heat in recovered flue gas and latent heat, the exhaust gas temperature of boiler is down to 32 DEG C, steam condensation rate in flue gas reaches 80%, and has NOx, SO of more than 60%
2together separate out with condensed water etc. the flue dust of harmful substance and more than 90%, effectively decrease the discharge of pollutant to air.Meanwhile, use the resistance to flue gas low-temperature dew point corrosion coating of domestic advanced person to process back-end ductwork, equipment life increases substantially.
Summary of the invention
Problem to be solved in the utility model is, there is provided one to be suitable for low-temperature flue gas waste heat to reclaim, resistance to dewpoint corrosion, condensed water recoverable, reduce pollutant emission simultaneously, eliminate chimney and emit white cigarette, be widely used in the condensed type combustion gas flue gas waste heat recovery apparatus that power is 0.7 ~ 70 megawatt gas fired-boiler.
For reaching above-mentioned technique effect, the utility model condensed type combustion gas flue gas waste heat recovery apparatus, is characterized in that: adopt A, B, C tri-grades of integral structures, segmentation condensing heat-exchange.
Described condensed type combustion gas flue gas waste heat recovery apparatus A level (1) is shell-and-tube heat exchanger, for heating boiler pipe network backwater; Condensed type combustion gas flue gas waste heat recovery apparatus B level (2) is heat-pipe heat exchanger, for heating boiler air blast; Condensed type combustion gas flue gas waste heat recovery apparatus C level (3) adopts cryogenic heat transfer element (3-2), with outdoor cold air forced-convection heat transfer, exhaust gas temperature is down to 32 DEG C.
Described cryogenic heat transfer element (3-2) is airtight two-phase heat transfer system, is suitable for working in 0 ~ 120 DEG C of temperature range.
Described cryogenic heat transfer element (3-2) shell is aluminium alloy or the full fin structure of stainless steel, and inside is vacuum, and is filled with working media acetone or methyl alcohol.
Described cryogenic heat transfer element (3-2) fume side part is provided with stainless steel condensed water drainage silk (3-2-3) of diameter 2.5 ~ 3.2 millimeters.
Described stainless steel condensed water drainage silk (3-2-3) is close to by pipe clamp (3-2-2) and is fixed on described cryogenic heat transfer element (3-2) bottom, and has at least one end to be fixed on described pipe clamp (3-2-2) by tensioning bolt (3-2-4) and clamp nut (3-2-6) tensioning.
Described condensed type combustion gas flue gas waste heat recovery apparatus B level (2) and C level (3) bottom are all provided with condensation water collection funnel (3-3), described condensation water collection funnel (3-3) bottom is connected with condensed water drainage tube (7), and condensed water is caused condensed water collecting box.
The flue inner wall of described condensed type combustion gas flue gas waste heat recovery apparatus B level (2), C level (3) and afterbody afterwards all scribbles resistance to flue gas low-temperature dew point corrosion coating.
Demister (4) and drainage blower fan (8) are installed in the flue after described condensed type combustion gas flue gas waste heat recovery apparatus C level (3).
Described condensed type combustion gas flue gas waste heat recovery apparatus A, B, C tri-grades adopts automatic control system, the parameters such as Real-time Collection exhaust gas volumn, flue-gas temperature, heat exchange power, adjusts heat exchange amount at different levels by the flow and flow velocity regulating cold fluid.
Implement the utility model and there is following beneficial effect: the high-temperature flue gas of gas fired-boiler burning is after condensed type combustion gas flue gas waste heat recovery apparatus, its flue-gas temperature is progressively reduced to about 32 DEG C, a large amount of obvious heat of smoke and steam latent heat are recycled, moisture in flue gas and harmful substance significantly reduce, boiler efficiency decreases the discharge of pollutant while improving.Advantage of the present utility model has:
(1) by the cryogenic heat transfer element that serviceability is more excellent, improve boiler efficiency, reduce exhaust gas temperature.
(2) application of alloy material and anticorrosive paint, makes equipment normally can work under flue gas dew point, reaches 15 years service life.
(3) the full fin structure of cryogenic heat transfer element plays flow-disturbing effect to air-flow, reduces the noise of flow of flue gas.
(4) most of steam liquefies and discharges in equipment, eliminates the phenomenon that chimney emits white cigarette.
(5) a large amount of harmful substances is dissolved in condensed water and also together discharges thereupon, decreases the discharge of pollutant to air.
(6) can Mist heat recovering in a large number, condensed water uses as boiler replenishing water and utilizes, and has saved the energy.
(7) use automatic control system to adjust heat exchange amount at different levels, make equipment waste heat recovery efficiency higher.
(8) gas fired-boiler that power is 0.7 ~ 70 megawatt is widely used in.
Accompanying drawing explanation
Fig. 1 is condensed type combustion gas flue gas waste heat recovery apparatus A, B, C tertiary structure schematic diagram;
Fig. 2 is that condensed type combustion gas flue gas waste heat recovery apparatus C level partly cuts open schematic diagram;
Fig. 3 is that condensed type combustion gas flue gas waste heat recovery apparatus installs effect schematic diagram;
Fig. 4 is cryogenic heat transfer element schematic;
Fig. 5 is stainless steel condensed water drainage silk scheme of installation.
Reference numeral: 1-condensed type combustion gas flue gas waste heat recovery apparatus A level; 2-condensed type combustion gas flue gas waste heat recovery apparatus B level; 3-condensed type combustion gas flue gas waste heat recovery apparatus C level; 4-demister; 5-by-pass flue; The automatic air register of 6-by-pass flue; 7-condensed water drainage tube; 8-drainage blower fan; 3-1 seals median septum; 3-2 cryogenic heat transfer element; 3-3 condensation water collection funnel; 3-2-1 cryogenic heat transfer element base tube; 3-2-2 pipe clamp; 3-2-3 stainless steel condensed water drainage silk; 3-2-4 tensioning bolt; 3-2-5 pad; 3-2-6 clamp nut.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
There is a condensing type gas-fired flue gas waste heat recovery apparatus for energy-saving and environmental protection function, as shown in Figure 1, adopt A, B, C tri-grades of integral structures, segmentation condensing heat-exchange.Condensed type combustion gas flue gas waste heat recovery apparatus A level 1 is shell-and-tube air-water heat exchanger, for heating boiler pipe network backwater, flue-gas temperature is down to 100 ~ 120 DEG C; Condensed type combustion gas flue gas waste heat recovery apparatus B level 2 is heat pipe-type gas-to-gas heat exchanger, and for heating boiler air blast, outdoor cold air is increased to 35 DEG C, flue-gas temperature is down to 60 ~ 80 DEG C; Condensed type combustion gas flue gas waste heat recovery apparatus C level 3 adopts the cryogenic heat transfer element 3-2 of cryogenic heat transfer excellent performance, carries out forced-convection heat transfer, flue gas is down to 32 DEG C with cold air or cold water for cold fluid.
Condensed type combustion gas flue gas waste heat recovery apparatus B level 2 becomes 15 ° of inclination angles with level when installing with C level 3, can ensure that heat pipe and cryogenic heat transfer element normally work like this, and the drainage being conducive to condensed water is discharged.Condensed type combustion gas flue gas waste heat recovery apparatus C level is box typed structure, and as shown in Figure 2, flue gas and cold fluid separate by sealing median septum 3-1, and cryogenic heat transfer element 3-2 runs through sealing median septum both sides, flue gas and the heat exchange of cold fluid reverse convection.As Fig. 4, cryogenic heat transfer element 3-2 is airtight two-phase heat transfer system, and its housing is aluminum alloy finned tube, and inside is vacuum, and is filled with working media acetone.Cryogenic heat transfer element 3-2 is suitable for working in 0 ~ 120 DEG C of temperature range, has fabulous heat-transfer effect, and have good decay resistance in low-temperature flue gas.As Fig. 5, stainless steel condensed water drainage silk 3-2-3 is installed immediately below cryogenic heat transfer element 3-2, stainless steel condensed water drainage silk 3-2-3 is the stainless steel wire of diameter 2.5 millimeters, and two ends are connected with bolt 3-2-4, are fixed on bottom cryogenic heat transfer element 3-2 by pipe clamp 3-2-2.Stainless steel condensed water drainage silk 3-2-3 is tensioned stretching by tensioning bolt 3-2-4, be fixed on pipe clamp 3-2-2 with clamp nut 3-2-6 and pad 3-2-5, be close to fin, maximal clearance is no more than 2mm, and stainless steel condensed water drainage silk 3-2-3 and cryogenic heat transfer element base tube 3-2-1 keeping parallelism.
Flue gas, through condensed type combustion gas flue gas waste heat recovery apparatus A, B, C tri-grades, is lowered the temperature step by step, when temperature be down to dew-point temperature (about 57 DEG C) below time, namely start have condensed water to separate out, when reaching 32 DEG C, the steam in flue gas has 80% and is condensed, NOx, SO
2together can separate out with condensed water etc. harmful substance more than 60%, flue dust has more than 90% and is dissolved in condensed water.Steam converges at the minimum point of fin on heat transfer element 3-2 after condensation, then flow to heat exchanger inwall along drainage silk 3-2-3.In the straight section flue at condensed type combustion gas flue gas waste heat recovery apparatus C level rear portion, deflection plate demister 4 is installed, farthest the moisture of interception entrained by high velocity smoke.Bottom condensed type combustion gas flue gas waste heat recovery apparatus B level and C level, condensation water collection funnel 3-3 is all installed, is connected with condensed water drainage tube 7 bottom condensation water collection funnel 3-3, condensed water is caused condensed water collecting box.Condensed water is discharged by drainage in time, effectively can reduce flue gas and carries water droplet secretly and avoid condensed water second gasification, substantially increase the condensation efficiency of condensed type combustion gas flue gas waste heat recovery apparatus.Together to separate out with condensed water due to harmful substance most of in flue gas and discharge outside system, so condensed type combustion gas flue gas waste heat recovery apparatus can play fabulous environment protecting.
Condensed water collected by collecting box does not have hardness, fabulous boiler soft water source, desulphurised natural gas due to component pure, burning dust is few, pH value is faintly acid, namely can be used as boiler replenishing water through simple process to use, therefore bring good economic benefit to user.
Condensed water has certain corrosivity, condensed type combustion gas flue gas waste heat recovery apparatus B level 2, C level 3 and afterwards back-end ductwork inwall all use the resistance to flue gas low-temperature dew point corrosion coating ZS-1041 of domestic advanced person to carry out spray treatment, substantially increase stability and the service life of equipment like this.
After condensed type combustion gas flue gas waste heat recovery apparatus C level, drainage blower fan 8 is installed, to overcome the SR that condensed type combustion gas flue gas waste heat recovery apparatus causes.
Condensed type combustion gas flue gas waste heat recovery apparatus C stage arrangement has by-pass flue 5, its switch is controlled by automatic air register 6, when condensed type combustion gas flue gas waste heat recovery apparatus C level needs repair and maintenance, opening automatic air register 6 makes flue gas enter chimney from by-pass flue 5, does not affect the normal operation of equipment.
A, B, C tri-grades of condensed type combustion gas flue gas waste heat recovery apparatus adopts Automatic Control, the parameters such as Real-time Collection exhaust gas volumn, flue-gas temperature, heat exchange power, adjust heat exchange amount at different levels by the flow and flow velocity that regulate cold fluid, the overall heat exchange performance of equipment is increased substantially.The signal such as acid-base value, liquid level of condensate water recovery device Real-time Collection condensed water, realize automatically adding alkali lye, to operations such as system water fillings according to signal, and by the signal is far passed to control room, realize in Central Control Room, read data, remote control, Automatic Optimal is run, alleviate the labour intensity of operating personnel, safe and reliable.
Condensed type combustion gas flue gas waste heat recovery apparatus is successfully applied to grand celebration and supports the army boiler room, year can save combustion gas 121.07 ten thousand stere, reduce the discharge about 2376 tons of the harmful substances such as carbon, sulphur and nitrogen oxide, eliminating chimney emits white cigarette phenomenon, reduces urban heat land effect.
Above disclosedly be only the utility model preferred embodiment, certainly can not limit the interest field of the utility model with this, therefore according to the equivalent variations that the utility model claim is done, still belong to the scope that the utility model is contained.
Claims (14)
1. for a condensed type combustion gas flue gas waste heat recovery apparatus for gas fired-boiler, it is characterized in that: adopt A, B, C tri-grades of integral structures, segmentation condensing heat-exchange.
2. condensed type combustion gas flue gas waste heat recovery apparatus according to claim 1, is characterized in that: described condensed type combustion gas flue gas waste heat recovery apparatus A level (1) is shell-and-tube heat exchanger, for heating boiler pipe network backwater; Condensed type combustion gas flue gas waste heat recovery apparatus B level (2) is heat-pipe heat exchanger, for heating boiler air blast; Condensed type combustion gas flue gas waste heat recovery apparatus C level (3) adopts cryogenic heat transfer element (3-2), with outdoor cold air forced-convection heat transfer, exhaust gas temperature is down to 32 DEG C.
3. the condensed type combustion gas flue gas waste heat recovery apparatus according to any one of claim 1-2, is characterized in that: described cryogenic heat transfer element (3-2) is airtight two-phase heat transfer system, is suitable for working in 0 ~ 120 DEG C of temperature range.
4. condensed type combustion gas flue gas waste heat recovery apparatus according to claim 3, it is characterized in that: described cryogenic heat transfer element (3-2) shell is aluminium alloy or the full fin structure of stainless steel, inside is vacuum, and is filled with working media acetone or methyl alcohol.
5. condensed type combustion gas flue gas waste heat recovery apparatus according to claim 4, is characterized in that: described cryogenic heat transfer element (3-2) fume side part is provided with stainless steel condensed water drainage silk (3-2-3) of diameter 2.5 ~ 3.2 millimeters.
6. condensed type combustion gas flue gas waste heat recovery apparatus according to claim 5, it is characterized in that: described stainless steel condensed water drainage silk (3-2-3) is close to by pipe clamp (3-2-2) and is fixed on described cryogenic heat transfer element (3-2) bottom, and has at least one end to be fixed on described pipe clamp (3-2-2) by tensioning bolt (3-2-4) and clamp nut (3-2-6) tensioning.
7. the condensed type combustion gas flue gas waste heat recovery apparatus according to any one of claim 1-2, it is characterized in that: described condensed type combustion gas flue gas waste heat recovery apparatus B level (2) and C level (3) bottom are all provided with condensation water collection funnel (3-3), described condensation water collection funnel (3-3) bottom is connected with condensed water drainage tube (7), and condensed water is caused condensed water collecting box.
8. the condensed type combustion gas flue gas waste heat recovery apparatus according to any one of claim 1-2, is characterized in that: the flue inner wall of described condensed type combustion gas flue gas waste heat recovery apparatus B level (2), C level (3) and afterbody afterwards all scribbles resistance to flue gas low-temperature dew point corrosion coating.
9. the condensed type combustion gas flue gas waste heat recovery apparatus according to any one of claim 1-2, is characterized in that: be provided with demister (4) and drainage blower fan (8) in the flue after described condensed type combustion gas flue gas waste heat recovery apparatus C level (3).
10. the condensed type combustion gas flue gas waste heat recovery apparatus according to any one of claim 1-2, it is characterized in that: described A, B, C tri-grades of heat exchangers adopt automatic control system, Real-time Collection exhaust gas volumn, flue-gas temperature, heat exchange power three parameters, adjust heat exchange amount at different levels by the flow and flow velocity regulating cold fluid.
11. condensed type combustion gas flue gas waste heat recovery apparatus according to claim 6, it is characterized in that: described condensed type combustion gas flue gas waste heat recovery apparatus B level (2) and C level (3) bottom are all provided with condensation water collection funnel (3-3), described condensation water collection funnel (3-3) bottom is connected with condensed water drainage tube (7), and condensed water is caused condensed water collecting box.
12. condensed type combustion gas flue gas waste heat recovery apparatus according to claim 6, is characterized in that: the flue inner wall of described condensed type combustion gas flue gas waste heat recovery apparatus B level (2), C level (3) and afterbody afterwards all scribbles resistance to flue gas low-temperature dew point corrosion coating.
13. condensed type combustion gas flue gas waste heat recovery apparatus according to claim 6, is characterized in that: be provided with demister (4) and drainage blower fan (8) in the flue after described condensed type combustion gas flue gas waste heat recovery apparatus C level (3).
14. condensed type combustion gas flue gas waste heat recovery apparatus according to claim 6, it is characterized in that: described A, B, C tri-grades of heat exchangers adopt automatic control system, Real-time Collection exhaust gas volumn, flue-gas temperature, heat exchange power three parameters, adjust heat exchange amount at different levels by the flow and flow velocity regulating cold fluid.
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|---|---|---|---|
| CN201420611047.7U CN204214139U (en) | 2014-10-21 | 2014-10-21 | A kind of condensed type combustion gas flue gas waste heat recovery apparatus |
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| CN201420611047.7U CN204214139U (en) | 2014-10-21 | 2014-10-21 | A kind of condensed type combustion gas flue gas waste heat recovery apparatus |
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| CN204214139U true CN204214139U (en) | 2015-03-18 |
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| CN201420611047.7U Expired - Fee Related CN204214139U (en) | 2014-10-21 | 2014-10-21 | A kind of condensed type combustion gas flue gas waste heat recovery apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819571A (en) * | 2014-10-21 | 2015-08-05 | 保定市恒宇机械电器制造有限公司 | Condensed gas waste heat recovery device |
| CN105546821A (en) * | 2016-01-07 | 2016-05-04 | 程宝华 | Fog and haze reducing heat recovery device for gas boiler |
| CN109140765A (en) * | 2018-09-12 | 2019-01-04 | 广德求带信息技术有限公司 | A kind of alcohol-based fuel boiler combustion system |
-
2014
- 2014-10-21 CN CN201420611047.7U patent/CN204214139U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819571A (en) * | 2014-10-21 | 2015-08-05 | 保定市恒宇机械电器制造有限公司 | Condensed gas waste heat recovery device |
| CN104819571B (en) * | 2014-10-21 | 2017-12-26 | 保定市恒宇机械电器制造有限公司 | A kind of condensed type combustion gas flue gas waste heat recovery apparatus |
| CN105546821A (en) * | 2016-01-07 | 2016-05-04 | 程宝华 | Fog and haze reducing heat recovery device for gas boiler |
| CN109140765A (en) * | 2018-09-12 | 2019-01-04 | 广德求带信息技术有限公司 | A kind of alcohol-based fuel boiler combustion system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20181021 |